000
00243nam a22001097a 4500
082
_a
621.80299
_b
KHA-T
100
_a
Khanna, O P
_9
236
245
_a
Text book of mechanical estimating and costing
260
_c
1993
300
_a
334p
942
_c
BK
999
_c
4626
_d
4626